Whenever I use arc9 on a server with my friends, the hitreg is simply horrendous. On stationary targets it's fine, on npcs it works fine, but if both you and another player are moving, you could dump an entire mag into that player and like 2 bullets will hit. On the client's side it hits, I can see the hit particles, and with other weapons it works fine, but I believe arc9 doesn't prioritize what the client "sees". The best way to make hitreg work is to find a middleground between what the client sees and what the person being hit sees. Whatever was done here was not a very good way to do it, and really ruins the mod for me.
Whenever I use arc9 on a server with my friends, the hitreg is simply horrendous. On stationary targets it's fine, on npcs it works fine, but if both you and another player are moving, you could dump an entire mag into that player and like 2 bullets will hit. On the client's side it hits, I can see the hit particles, and with other weapons it works fine, but I believe arc9 doesn't prioritize what the client "sees". The best way to make hitreg work is to find a middleground between what the client sees and what the person being hit sees. Whatever was done here was not a very good way to do it, and really ruins the mod for me.